Another man has been arrested in connection with an operation targeting child sexual exploitation.
The 30 year old from Aylesbury was arrested last night on suspicion of sexual offences and joins 10 other men who were detained following dawn raids on Tuesday.
All the men are currently in police custody.
Police said the two victims were under the age of 13 at the time of the alleged offences, which took place nearly ten years ago.
Around 120 officers executed warrants at 13 properties from 7am on Tuesday.
Eight warrants were carried out in Aylesbury, one in Milton Keynes, one in Buckingham, two in Chesham and one in Hayes, Middlesex.